Support GHC 9.12.1 #160

Job	Run time
Generate Alpine matrix from cabal	5s
Generate matrix from cabal	2s
9.6.6 on macos-latest	3m 57s
9.8.4 on macos-latest	4m 0s
9.10.1 on macos-latest	7m 58s
9.12.1 on macos-latest	5m 30s
9.6.6 on ubuntu-latest	9m 24s
9.8.4 on ubuntu-latest	9m 8s
9.10.1 on ubuntu-latest	7m 28s
9.12.1 on ubuntu-latest	7m 41s
9.6.6 on alpine-3.20	9m 34s
9.8.4 on alpine-3.20	9m 43s
9.10.1 on alpine-3.20	10m 16s
9.12.1 on alpine-3.20	9m 47s
Collect test results	6s
Create a GitHub prerelease with the binary artifacts	0s
	1h 34m 39s

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